Speaker
Sarah Zampa
(Budapest University of Technology and Economics)
Description
In this talk, I will first recall the definition of the knot's signature in the sense of Gordon-Litherland, computed from a possibly non-orientable surface (via the Goeritz pairing together with some appropriate correction term). I will then follow with an introduction of strongly invertible knots, and define the corresponding concept of equivariant signature, as well as the equivariant unknotting number for such knots.
Primary author
Sarah Zampa
(Budapest University of Technology and Economics)
